<faultstring>JBO-Either of entity or category is passed as null or invald: Either of entity or category is passed as null or invald.oracle.apps.fnd.applcore.messages.FndMessagesUtil$FndMapResourceBundle</faultstring>

Corrected the payload as suggested just by passing only the project number (WTW0008). Still getting the same issue "JBO-Either of entity or category is passed as null or invald: Either of entity or category is passed as null or invald.oracle.apps.fnd.applcore.messages.FndMessagesUtil$FndMapResourceBundle"